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    • 6. 发明授权
    • Process for preparing polyethylene
    • 制备聚乙烯的方法
    • US5684097A
    • 1997-11-04
    • US475842
    • 1995-06-07
    • Ari PalmroosAli HarlinAntero AhvenainenJouni TakakarhuAimo Sahila
    • Ari PalmroosAli HarlinAntero AhvenainenJouni TakakarhuAimo Sahila
    • C08F2/14B01J8/24B01J19/24C08F2/06C08F2/34C08F10/02C08F210/16
    • C08F10/02B01J19/2435B01J19/245B01J8/24B01J2219/00051B01J2219/00166B01J2219/00173C08F210/16
    • A process for producing polyethylene compositions in the presence of a catalytic system of ethylene polymerizing catalyst and cocatalyst in a multistage continuous reaction sequence consisting of successive liquid phase and gas phase polymerizations is disclosed. In the first step of the process, ethylene and optionally hydrogen and comonomer are polymerized in a first loop reactor in a low boiling hydrocarbon medium in the presence of ethylene polymerizing catalyst and cocatalyst. The reaction mixture is then removed and then transferred to a second loop reactor where polymerization is continued by addiing ethylene, hydrogen and optionally inert hydrocarbon, comonomers and cocatalysts. Thereafter, the reaction mixture is removed from the second loop reactor along with an essential part of the reaction medium and transferred to a gas phase reactor where polymerizing is continued in the presence of added ethylene and optionally hydrogen, comonomers and cocatalysts to form an end product. The residence time and reaction temperature being such that the proportion of the ethylene polymer produced in the first loop reactor to the end product of the process is between 1-20%.
    • 在由连续液相和气相聚合组成的多级连续反应序列中,在乙烯聚合催化剂和助催化剂催化体系存在下生产聚乙烯组合物的方法。 在该方法的第一步中,在乙烯聚合催化剂和助催化剂存在下,乙烯和任选的氢和共聚单体在第一回路反应器中在低沸点烃介质中聚合。 然后除去反应混合物,然后转移到第二环管反应器中,其中通过加入乙烯,氢气和任选的惰性烃,共聚单体和助催化剂继续聚合。 此后,将反应混合物与反应介质的主要部分一起从第二环管反应器中除去,并转移到气相反应器中,在气相反应器中,在加入的乙烯和任选的氢,共聚单体和助催化剂的存在下,继续聚合以形成最终产物 。 停留时间和反应温度使得在第一回路反应器中产生的乙烯聚合物与该方法的最终产物的比例为1-20%。
    • 10. 发明授权
    • Arrangement in connection with clamping tools
    • 与夹具相关的安排
    • US06827568B2
    • 2004-12-07
    • US10220569
    • 2002-11-29
    • Ali HarlinJyrki PennalaPekka Huotari
    • Ali HarlinJyrki PennalaPekka Huotari
    • B29C4706
    • B29C47/0822B29C47/0016B29C47/28
    • An arrangement in connection with clamping tools, which comprises a nozzle structure which consists of coaxially arranged nozzle elements and is arranged to form one or more layers which cover a flexible elongated element on the surface of the flexible elongated element, which passes through the innermost nozzle element, in which arrangement at least the head of the nozzle element, which controls the flexible elongated element, is a separate unit which is arranged to be pushed into its position in the direction of the flexible elongated element and provided with gripping means, which grip the innermost nozzle element of the nozzle structure as the unit arrives at the nozzle element. The joint between the separate unit and the nozzle element of the nozzle structure is arranged to be loosened by repulsive force acting on the separate unit in the direction of the flexible elongated element and the separate unit is arranged to exit from the nozzle structure in the direction of the flexible elongated element.
    • 与夹紧工具相关的装置,其包括由同轴布置的喷嘴元件组成的喷嘴结构,并且布置成形成一个或多个层,其覆盖柔性细长元件的表面上的柔性细长元件,其穿过最内部喷嘴 元件,其中至少控制柔性细长元件的喷嘴元件的头部的布置是分离的单元,其被布置成沿着柔性细长元件的方向被推入其位置并且设置有夹持装置,该夹持装置 作为单元的喷嘴结构的最内部喷嘴元件到达喷嘴元件。 分离单元和喷嘴结构的喷嘴元件之间的接头被布置成通过沿着柔性细长元件的方向作用在单独单元上的排斥力而松开,并且分离单元被布置成沿喷嘴结构的方向 的柔性细长元件。